Geochemical Characteristics of the Platinum Group Elements from the Poshi Intrusion, Northeastern Tarim Block and Its Mineralization
详细信息
- 责任者：Xia Mingzhe (College of Earth Science and Land Recourses ; Chang’an University ; Xi’an 710054 ; China) ; Zhao Xianjun
- 刊名：Geology and Prospecting
- 出版年：2013
- 卷期：49(1)
- 关键词：铂族元素 ; platinum group elements ; 铜矿 ; copper ores ; 镍矿 ; nickel ores ; 塔里木盆地 ; Tarim Basin
- 页码：p.1-8
- 图表：illus., 1 table, 26 refs.
- 分类号：1001
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
摘要
The Poshi intrusion is located within the Pobei rock body northeast of the Tarim block.It is one of the small intrusions formed during the third magmatic stage of the Pobei rock body.The drilling data show that the main rock types are dunite,lherzolite,pl-lherzolite,olivine websterite and gabbro.The sulfide occurred in the lherzolite.Disseminated sulfide is dominant in the Poshi ore body.Geochemical characteristics of the platinum group elements indicate that the primary magma is high-MgO basaltic magma,and the Poshi parental magma may have experienced about 0.012% sulfide removal,resulting in the low content of the PGE.The characteristics of the intrusion,types,textures and structures of ores suggest a great potential of ore-search in the deep Poshi intrusion.